29er tire for touring (needs to be good rolling, tough and long wearing)?

I have gotten a few suggestions and right now am in between the Schwalbe Smart Sams and Geax Saguaros. 2.25+ preferably. I'll be riding a mix of trails, tracks, gravel and pavement for 4 months and am planning on packing a spare. Thanks in advance for your recommendations!

Haven't used a Smart Sam, have used the Marathons and they are very good, but will also throw out the WTB Nano as another option if you want to really have something you can enjoy while riding the trails and that rolls and lasts forever on tarmac.

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